Warning: require(ABSPATHWPINC/Text/Diff.php) [function.require]: failed to open stream: No such file or directory in /home/courses/data/www/courses.kg/wp-includes/wp-diff.php on line 13

Fatal error: require() [function.require]: Failed opening required 'ABSPATHWPINC/Text/Diff.php' (include_path='.:/usr/local/php53/lib/php') in /home/courses/data/www/courses.kg/wp-includes/wp-diff.php on line 13